package com.lyl.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.lyl.common.R;
import com.lyl.entity.Employee;
import com.lyl.service.EmployeeService;
import jakarta.servlet.http.HttpServletRequest;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import java.time.LocalDateTime;

/**
 * @author 李亚龙
 * @version 1.0
 */

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //HttpServletRequest request 存放已经登录的用户

        //1.将密码进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        if(emp == null){
            return R.error("登陆失败，用户不存在");
        }

        if(!emp.getPassword().equals(password)){
            return R.error("登录失败，密码有误");
        }

        if(emp.getStatus() == 0){
            return R.error("登录失败，账号已禁用");
        }

        //登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());

        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //请理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");

        return R.success("退出成功");
    }

    /**
     * 增加员工
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee){
        log.info("新增员工信息：{}",employee);
        //设置初始密码，并且进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //设置创建时间和更新时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
        //设置创建人和更新人
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.info("page = {}, pageSize = {}, name = {}", page,pageSize,name);
        //构造分页构造器
        Page<Employee> pageInfo = new Page<>(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
            //添加过滤条件（where后面的条件）
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
            //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);
         /*这里并不需要返回值，这里借助的分页插件会自动将返回结果封装到PageInfo对象中*/

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee){
        log.info(employee.toString());
//        employee.setUpdateUser((Long) request.getSession().getAttribute("employee"));
//        employee.setUpdateTime(LocalDateTime.now());
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("显示员工id：{}",id);
        Employee emp = employeeService.getById(id);
        if(emp != null){
            return R.success(emp);
        }
        return R.error("没有查询到对应员工信息");
    }
}
